US5529604AExpiredUtility

Modified stainless steel powder composition

47
Assignee: AMETEK SPECIALTY METAL PRODUCTPriority: Mar 28, 1995Filed: Mar 28, 1995Granted: Jun 25, 1996
Est. expiryMar 28, 2015(expired)· nominal 20-yr term from priority
Inventors:John H. Reinshagen
C22C 33/0207
47
PatentIndex Score
9
Cited by
6
References
10
Claims

Abstract

The present invention relates to a modified stainless steel powder composition from which moldings can be formed. The modified stainless steel powder composition comprises from about 1% to about 3% by weight of tin, from about 0.5% to about 1.5% by weight of an additive consisting essentially of from about 2% to about 30% by weight tin and the balance consisting essentially of at least one element selected from copper and nickel, and the balance essentially a stainless steel powder. A process for forming the modified stainless steel powder composition is also described.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
       1. A modified stainless steel composition from which moldings can be formed comprising: (a) from about 1% to about 3% by weight tin;   (b) from about 0.5% to about 1.5% by weight an alloyed powdered additive consisting essentially of from about 2.0% to about 30% by weight tin, balance consisting essentially of at least one element selected from copper and nickel; and   (c) balance essentially a stainless steel powder.   
     
     
       2. The composition of claim 1 wherein said additive has a nominal composition of about 7-9% tin, about 14-16% nickel and the balance essentially copper. 
     
     
       3. The composition of claim 1 wherein said stainless steel is an austenitic stainless steel. 
     
     
       4. The composition of claim 1 wherein said stainless steel powder is stainless steel 303L. 
     
     
       5. The composition of claim 1 wherein said stainless steel powder is stainless steel 304L. 
     
     
       6. The composition of claim 1 wherein said stainless steel powder is stainless steel 316L. 
     
     
       7. The composition of claim 1 wherein said stainless steel is a martensitic stainless steel. 
     
     
       8. The composition of claim 1 wherein said stainless steel is a ferritic stainless steel. 
     
     
       9. The composition of claim 1 wherein said stainless steel is a precipitation hardening stainless steel. 
     
     
       10. The composition of claim 1 further comprising from about 0.25% to about 1.5% by weight of a lubricant.

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